Files

T

Alexander a1f6701bac feat: initial implementation of metadata aggregator

- gRPC service with MusicBrainz provider
- PostgreSQL schema with migrations
- Service layer with database-first caching
- Repository pattern for data access
- YAML configuration support
- Research documentation for 17 music metadata projects

2026-04-28 16:28:53 +02:00

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AcoustID

Overview

AcoustID is an open-source audio fingerprinting service. It identifies music tracks by their acoustic fingerprint and links them to MusicBrainz recordings.

Key Features

Purpose: Audio identification via acoustic fingerprinting
Technology: Chromaprint fingerprint generation
Database: Crowdsourced fingerprints linked to MusicBrainz
License: MIT (code), CC BY-SA 3.0 (data)

Source

Resource	URL
Server Repository	https://github.com/acoustid/acoustid-server
Index Repository	https://github.com/acoustid/acoustid-index
Chromaprint Library	https://github.com/acoustid/chromaprint
API Documentation	https://acoustid.org/webservice
Website	https://acoustid.org

API Examples

# Lookup by fingerprint
GET /v2/lookup?client=YOUR_API_KEY&meta=recordings&fingerprint={fp}&duration={dur}

# Submit new fingerprint
POST /v2/submit

Chromaprint CLI

# Generate fingerprint from audio file
fpcalc song.mp3
# Returns: FINGERPRINT=... DURATION=...

Self-Hosting

The acoustid-index v2 is written in Zig for performance:

git clone https://github.com/acoustid/acoustid-index.git
# Follow build instructions in README

Notes

Used by: Beets, Picard, Kid3, MusicBrainz ecosystem
Free API for audio fingerprint matching
Identify unknown files → get MusicBrainz metadata

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